Finding the Third Proportional to 39,491.30 and 86,363.72

Step by Step Solution

1. Step 1: Write the proportion equation
   39,491.30 : 86,363.72 = 86,363.72 : x
2. Step 2: Convert to fraction form
   39,491.30/86,363.72 = 86,363.72/x
3. Step 3: Cross multiply
   39,491.30x = 86,363.72 × 86,363.72
4. Step 4: Simplify right side
   39,491.30x = 7,458,691,916.33
5. Step 5: Solve for x
   x = 7,458,691,916.33/39,491.30
6. Step 6: Final answer
   x = 188,869.26